LienBuild is a free document generator for construction payment paperwork. It helps contractors, subcontractors, and suppliers turn unpaid invoices into a clean paper trail: the demand letter that asks, the notices and mechanics lien guides that explain the deadlines, the lien waivers exchanged with each payment, and the G702/G703 pay applications that carry progress billing. What you can generate, free, with no account: • Demand letters for payment — three scenarios (general contractor owed by owner, subcontractor owed by the GC, final retention), citing state lien deadlines with statute numbers for Texas, California, and Florida. • Lien waivers — conditional and unconditional, progress and final, in the statutory format for states that prescribe one (CA §§8132–8138, TX §53.284, FL §713.20). • AIA-style G702/G703 application for payment — same structure and field math as the standard forms, original layout, with the G703 continuation sheet. Not affiliated with the American Institute of Architects. • Mechanics lien guides — the notice, record, enforce sequence with statutory deadlines for Texas, California, and Florida. Every document is assembled in your own name. Signature lines stay blank on purpose: review the document against your records, print, sign by hand, and send it yourself. LienBuild never sends anything, never signs anything, and never appears as a party. LienBuild provides general information and document formatting, not legal advice. Rules vary by state, role, and project type — consult a licensed attorney in your state before relying on any deadline. Built for the people who finish the work and wait the longest to get paid.